Industrial roll with optical roll cover sensor system

US8474333B2 · kind B2 · utility

Assignee

• Voith Patent GmbH · DE

Inventors

• Antje Berendes · Ternitz, AT
• Norbert Gamsjaeger · Bad Fischau, AT
• Wolfgang Ecke · Jena, DE
• Manfred Rothhardt · Jena, DE

Key dates

• Filing date: Mar 23, 2011
• Grant date: Jul 2, 2013
• Expiry date: Jan 3, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01L5/0085
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An industrial roll is provided, comprising a transverse force transducing fiber Bragg sensor that is embedded in the roll cover and/or located in-between the roll cover and the roll core of the industrial roll. The transverse force transducing fiber Bragg sensor comprises a fiber optical waveguide having a fiber core and a fiber cladding, and a stud element being nonpositively joined to a partial area of the circumferential surface of the fiber optical waveguide. The fiber optical waveguide comprises a Bragg grating located in the fiber core, whereby the dimension of the partial area in the longitudinal direction of the fiber is longer than a grating spacing of the Bragg grating. The partial area is located at a section of the fiber optical waveguide housing the Bragg grating, and at least a first component of the stud element is formed from a first material having a Young's modulus of less than 10 kN/mm2.